Answer:
4, because 12/3 is 4 cause 3×4=12 
 
        
             
        
        
        
Answer:
The number is -6. 
Step-by-step explanation:
Variable x = a number
Set up an equation: 
3x + 12 = -6
Isolate variable x:
3x = -18
x = -6
Check your work:
3(-6) + 12 = -6
-18 + 12 = -6
-6 = -6 
Correct! 
 
        
                    
             
        
        
        
Answer:
6.69
Step-by-step explanation:
The hundredths place is two decimal places to the right. This lands you at 8, so you must look at the number after it to determine whether you round up or down. So you look at 5, which rounds the 8 up to 9. Therefore, it is 6.69
 
        
                    
             
        
        
        
Answer:
The sample size required is 910.
Step-by-step explanation:
The confidence interval for population proportion is:

The margin of error is:

Given:

The critical value of <em>z</em> for 90% confidence level is:
 *Use a standard normal table.
 *Use a standard normal table.
Compute the sample size required as follows:

Thus, the sample size required is 910.
 
        
             
        
        
        
The answer is B djiekljfjroeo